Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-31894

Quick assessment

Affected
Siemens SIMATIC PCS 7 V8.2 and earlier
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Siemens SIMATIC PCS 7是德国西门子（Siemens）公司的一套过程控制系统。 Siemens SIMATIC PCS 7存在安全漏洞，该漏洞可能允许攻击者更改某些元文件的内容。以下产品和版本受到影响：SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions), SIMATIC PDM (All versions), SIMATIC STEP 7 V5.X (All versions <

AI Predicted 4.3 Difficulty: Moderate EPSS 0.23% · P12
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-31894

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 SP2 HF1). A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC PCS 7 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC PCS 7是德国西门子（Siemens）公司的一套过程控制系统。 Siemens SIMATIC PCS 7存在安全漏洞，该漏洞可能允许攻击者更改某些元文件的内容。以下产品和版本受到影响：SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions), SIMATIC PDM (All versions), SIMATIC STEP 7 V5.X (All versions <
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Siemens SIMATIC PCS 7 V8.2 and earlier All versions -
Siemens SIMATIC PCS 7 V9.X All versions < V9.1 SP2 -
Siemens SIMATIC PDM All versions < V9.2 SP2 -
Siemens SIMATIC STEP 7 V5.X All versions < V5.7 -
Siemens SINAMICS STARTER (containing STEP 7 OEM version) All versions < V5.4 SP2 HF1 -

II. Public POCs for CVE-2021-31894

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-31894

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-31894 (1)

Same Patch Batch · Siemens · 2021-07-13 · 56 CVEs total

CVE-2021-31895 8.1 HIGH Siemens RUGGEDCOM安全漏洞
CVE-2020-28400 7.5 HIGH Siemens SCALANCE S602安全漏洞
CVE-2021-34315 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34327 Siemens JT2GO 缓冲区错误漏洞
CVE-2021-34330 Siemens Jt2go和Siemens Teamcenter Visualization 输入验证错误漏洞
CVE-2021-34329 Siemens JT2GO和Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34328 Siemens JT2GO 缓冲区错误漏洞
CVE-2021-34331 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34319 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34318 Siemens Jt2go和Siemens Teamcenter Visualization 输入验证错误漏洞
CVE-2021-34317 Siemens JT2GO 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34316 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34321 Siemens JT2GO 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34314 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34313 Siemens Jt2go 缓冲区错误漏洞
CVE-2021-34312 Siemens JT2GO 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34311 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34310 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34309 Siemens Jt2go 和 Siemens Teamcenter Visualization 缓冲区错误漏洞
CVE-2021-34308 Siemens JT2GO 缓冲区错误漏洞

Showing top 20 of 56 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: SIMATIC PCS 7 V8.2 and earlier
Same vendor: Siemens
Same weakness: CWE-732

V. Comments for CVE-2021-31894

No comments yet

Leave a comment